EP 0119355 B1 19870805 - POSITION DETECTING APPARATUS
Title (en)
POSITION DETECTING APPARATUS
Publication
Application
Priority
JP 22140882 A 19821216
Abstract (en)
[origin: US4623253A] The image of an object is focused on a pair of photoelectric transducer arrays through a focusing lens, a beam splitter, and cylindrical lenses, the photoelectric transducer arrays having longitudinal axes extending substantially perpendicularly to each other. A scanning unit operates to move object images one-dimensionally over the photoelectric transducer arrays at an angle to the longitudinal axes thereof. A control unit is responsive to detected signals from the photoelectric transducer arrays and generates a scanning signal for the scanning unit for determining a two-dimensional position of the object with respect to the photoelectric transducer arrays. The beam splitter and the cylindrical lenses may be dispensed with, and the photoelectric transducer arrays may be replaced with a matrix of four photoelectric transducers.
IPC 1-7
IPC 8 full level
G01B 11/00 (2006.01); G01B 11/03 (2006.01); G01S 17/06 (2006.01)
CPC (source: EP US)
G01B 11/00 (2013.01 - EP US); G01S 17/06 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 4623253 A 19861118; DE 3372877 D1 19870910; EP 0119355 A1 19840926; EP 0119355 B1 19870805; JP H0146002 B2 19891005; JP S59109805 A 19840625
DOCDB simple family (application)
US 56218283 A 19831216; DE 3372877 T 19831216; EP 83307685 A 19831216; JP 22140882 A 19821216